1 #ifndef _PARISC_BUG_H 2 #define _PARISC_BUG_H 3 4 #include <linux/kernel.h> /* for BUGFLAG_TAINT */ 5 6 /* 7 * Tell the user there is some problem. 8 * The offending file and line are encoded in the __bug_table section. 9 */ 10 11 #ifdef CONFIG_BUG 12 #define HAVE_ARCH_BUG 13 #define HAVE_ARCH_WARN_ON 14 15 /* the break instruction is used as BUG() marker. */ 16 #define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff" 17 #define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */ 18 19 #if defined(CONFIG_64BIT) 20 #define ASM_WORD_INSN ".dword\t" 21 #else 22 #define ASM_WORD_INSN ".word\t" 23 #endif 24 25 #ifdef CONFIG_DEBUG_BUGVERBOSE 26 #define BUG() \ 27 do { \ 28 asm volatile("\n" \ 29 "1:\t" PARISC_BUG_BREAK_ASM "\n" \ 30 "\t.pushsection __bug_table,\"a\"\n" \ 31 "2:\t" ASM_WORD_INSN "1b, %c0\n" \ 32 "\t.short %c1, %c2\n" \ 33 "\t.org 2b+%c3\n" \ 34 "\t.popsection" \ 35 : : "i" (__FILE__), "i" (__LINE__), \ 36 "i" (0), "i" (sizeof(struct bug_entry)) ); \ 37 unreachable(); \ 38 } while(0) 39 40 #else 41 #define BUG() \ 42 do { \ 43 asm volatile(PARISC_BUG_BREAK_ASM : : ); \ 44 unreachable(); \ 45 } while(0) 46 #endif 47 48 #ifdef CONFIG_DEBUG_BUGVERBOSE 49 #define __WARN_FLAGS(flags) \ 50 do { \ 51 asm volatile("\n" \ 52 "1:\t" PARISC_BUG_BREAK_ASM "\n" \ 53 "\t.pushsection __bug_table,\"a\"\n" \ 54 "2:\t" ASM_WORD_INSN "1b, %c0\n" \ 55 "\t.short %c1, %c2\n" \ 56 "\t.org 2b+%c3\n" \ 57 "\t.popsection" \ 58 : : "i" (__FILE__), "i" (__LINE__), \ 59 "i" (BUGFLAG_WARNING|(flags)), \ 60 "i" (sizeof(struct bug_entry)) ); \ 61 } while(0) 62 #else 63 #define __WARN_FLAGS(flags) \ 64 do { \ 65 asm volatile("\n" \ 66 "1:\t" PARISC_BUG_BREAK_ASM "\n" \ 67 "\t.pushsection __bug_table,\"a\"\n" \ 68 "2:\t" ASM_WORD_INSN "1b\n" \ 69 "\t.short %c0\n" \ 70 "\t.org 2b+%c1\n" \ 71 "\t.popsection" \ 72 : : "i" (BUGFLAG_WARNING|(flags)), \ 73 "i" (sizeof(struct bug_entry)) ); \ 74 } while(0) 75 #endif 76 77 78 #define WARN_ON(x) ({ \ 79 int __ret_warn_on = !!(x); \ 80 if (__builtin_constant_p(__ret_warn_on)) { \ 81 if (__ret_warn_on) \ 82 __WARN(); \ 83 } else { \ 84 if (unlikely(__ret_warn_on)) \ 85 __WARN(); \ 86 } \ 87 unlikely(__ret_warn_on); \ 88 }) 89 90 #endif 91 92 #include <asm-generic/bug.h> 93 #endif 94 95